Machine for setting eyelets.



R. F. KNIGHT.

MACHINE FOR SETHNG EYELIETS.

APPLICATION Huml JULY 1. 1917.

Patend Mar. 18,1919'.

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2 SHEETS-SHEET l WVM/rifa R. F. KNIGHT. MACHINE Foa sfuma mms.

APPLICATION FILED JULY I. i917. 1,297,695, Patented Mar. 18,1919.

2 SHEETS-SHEET 2.

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'lll 6 tions may 2 STATES' A RALPH FRANK KNIGHT, 0F BEVERLY, MASSACHUSETTS, ASSIGNO, BY MESNE ASSIGNMENTS, T0 UNITED SHOE MACHINERY CORPORATION,

l JERSEY, A CQRIPOBA'IION- 0F NEW 0F RATEBSON,

meme ron SET-.rma mms.

To all whom it may concern:

"i Be itknown that I, RALPH FRANK KNIGHT, a citizen ofthe United States, residing at Beverly, in the county of Essex and State of Massachusetts, have invented certain Improvements in Machines for'Setting Eyelets, bf which the following description, 1n connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to improvements in machines for setting eyelets or similar fasteners' and is illustrated as embodied in a machine for setting blind or invisible eyelets of the-type described in an application of H. W. Kenway, tember 1, 1914.

Eyeleting machines of the type referred to are provided with an expansible upsetting die comprising' movable sections which are normally held in contracted condition. The upsetting die, in contracted condition, is passed through one or more superposed layers of material into which a blind or invisible eyelet is to be inserted. After the contracted' die has passed through the work, 'it is expanded and the upsetting of the eyelet is' effected by forcing the eyelet barrel eyelet' wrongly positioned. in the delivery' end ofthe raceway or when the barrel of the eyelet presented to the upsetting die is either distorted or clogged up. Such conditions-'may cause breakage of the expansible die orinterfere otherwise with the proper setting of the eyelets and it is the general object of the invention to obviate such difficulty.

' With these conditions in view, an important feature of the present invention consists in a guard :for protecting the ends of the sectionsof an expansible die during its movementirelative to the raceway. The guard protecting the ends of the upsetting die sec- K be so shaped and dimensioned that it will securely protect the end of the upsetting die sections against encounter with a wrongly positioned or faulty eyelet.` As

liereiunq hown the guard is constructed so as to cleara passage through a distorted or clogged up barrel of an eyelet.

An'ther important feature of the inven- Specication of Letters Patent.

Appuminn mea July 7, 1917. serial no. 179,24s.

Serial No. 859,632, iled Sepvthe setting devices.

Patented Mar, 1e, 1919.

tion consists in die expanding means located within an expansible die.' This arrangement is of particular advanta e because the die expanding member keeps t e interiorof the die free from dirt and chips which might prevent proper contraction of the sections of.

the die. As herein shown, the functions above discussed are taken care of by a single member and this combined guard and die expanding member is also so constructed and arranged that the individual sections of the upsetting die are laterally supported while the die is in expanded condition and that the upsetting flange of the die receives igid support during the upsetting opera.-

lon.

These and other features of the invention including certain details of construction and combinations of parts will be describe'd in connection with an illustrated machine shown in the drawings in which- Figure 1 is a perspective of so much of an eyeleting machine as is necessary to understand the present invention.

Fig. 2 is an exploded view of the setting .and expanding tools.

Figs. 3, 4, 5 yand 6 are views inside elevation illustrating the successive steps in the cycle of the machine.

Fig. 7 is perspective of the die expanding member.

Fig. 8 is a sectional view on anI enlarged scale showing the setting device and the feeding member in position at the conclusion of the setting operation The machine frame 2 is provided with vertical journals for a plunger 4 carrying The plunger 4 is reciprocated vertically by a disk cam 6 mounted upon the main shaft of the machine and having a cam track cut into its rear face.' The frame 2 also supports a stationary work plate 10 above which operate a punch lever 12 and a feeding lever 14 which-will be hereinafter referred to.

The lower setting die 16 is shaped at its upper end to fit the flange of the eyelet to near its upper end. 'The tends over 45 of its circumference. The

body of the upsetting die 22 is hollow to receive the stem 34 of a die expanding member bestJshown in Fig. 7. The sections of the upsetting die 22 are of resilient nature and are so shaped as to be normally in contact with each other so that the die 22 as a whole is in contracted condition. The upper end of the upsetting die is substantially flat and rhas a diameter slightly less than the inner diameter of the eyelet to be set. Immediately beneath its upper end the upsetting die 22 is reduced in diameter its surface being curved so as to form. a shoulder providing an upsetting surface facing the eyelet carrying set 16. The inner corner of the upper end of each die section is slightly beveled off so that a substantially conical recess is formed at the interior of the upsetting die upsetting die is arranged to be passed through the hole in the lining part 90 of the upper in its normal or (.ontrzictedE position and in this condition the diameter of the up er end of the upsettingdie is slightly less t an the diameter of the hole in the work. The body of the upsetting die 16 is threaded. into a movable angle piece 26 which is guided for movement in the machinel frame and projects in througha slot 28 in the wall of the plunger 4. Beneath the overhanging end of the angle piece 26 is disposed a hollow flanged core'30 between which and the bottom of the plunger 4 is interposed a. stitll compression spring 32l tending at all times Vvate the die expanding member.

to elevate the angle piece 26 and the upsetting die 22 carried thereby. The stem 34 of the die expanding member is bent at its,

lower end and provided Witha lateral projection 36 (Fig. 7 which -is normally in engagement with the under side of the threaded end of the upsetting die 22. The lower bent end of the stem 34 is spring-tempered so that the die expanding member is resiliently interlocked with the upsetting die when these parts occupy their normal position but may be easily removed when the machine is disassembled. The end and the projection 36 of the stem k34 rest upon the head of a short plunger 38 which bears on the upper end of a compression spring 40 contained within the hollow core 30 and tending to ele- It will be understood that the eyelet to be set is deliveredv to the setting die 16 and the clenching operation is effected by the relative-movement of the die 16 and the upsetting die 22, which movement compresses the spring 32. The upward movement of the upsetting die 22 is limited by an adjustable stop 68 secured in an oblique groove in a bracket 69 fixed to the frame 2.

- member 50 52 cupped at its lower end for engagements, The'pirncliii` The feeding lever 14 carries a feeding lwhich includes a yielding; pinv with the die expanding member. lever 12 above referred to is providedv with' a punch 54 which coperates with a punching die 56 arranged beneaththe punch im a1' slot in'the work plate 10. The punching operation is effected by the downward movement. of the punch 54 by swinging the lever 12 by a cam not herein shown. The punching operation takes place at one side of the setting position whereupon the punch isi re;- tracted from the work and moved to am inoperative position. The feed lever 14: is subsequently moved so as to carry the feeding pin 52 into alinement with the previously punched hole, then depressed to= engage the work and finally moved towardthe v left while still in engagement with the work to bring the punched hole into alinenrent with the setting devices. During 'the insertion of an eyelet the feeding pin 52 is engaged by the rising and forced upwardly against. the tension of a spring 55 arranged within a casing of the feeding lever 14 permitting the expansible die to rise in close-d condition to vproper position in the layers of the Work as determined b-y the stop 68 which limits' the upward movement of the angle piece 26. A slight downward motion 'of the lever 14 then causes the feeding pin 52 to force the die expanding member into the expansiible, die thereby expanding itA ready to split and spread the eyelet when the latter is forced upward by the continued upward movement of the plunger 4.

After the contact of the angle piece with the stop 68 the spring 32 is compressed permitting the plunger 4 to continue its upward movement, and as soon as the feeding lever is returned to its initial position, the upsetting die is permitted to contract so that it may be drawn downwardly through the barrel of the clenched eyelet. The movements of the yfeeding lever 14 are derived from a. cam 64 upon the main shaft of the machine. The cam 64 acts upon a roll? 65 of a vertical shaft 66 connected with the' rear end of the feeding lever 14.

In order to facilitate the entrance of the'l die expanding member the head 70 the expanding member is: reL

duced in diameter, thus formingan anniulllaur4 shoulder 72 which is adapted to engage` the upsetting fla-nge of the sectional die and4 give rigid support to said flange during the upsettin operation. By supporting the upsetting ange of the die in this manner the life of the die wilLbe materially prolonged lsince the strain exerted upon the flange is practically taken' up by the annular shoulder 7 2.*

Beneath the shoulder 72 the die expanding member is provided with a cylindrical portion 74 of substantially the same length as the barrel of the eyelet 'to be upset. The cylindrical portion 74 supports rigidly the sections of the die, thus preventing lateral-distortion ofthe die Vsections during its expansion. The cylindrical portion74 tapers at 76 into the stem 34 to insure a gradual expansion of the die whenthe die expanding .22. Should the barrelof the eyelet be dismember is forced into the die. It lwill be noted that the stem 34 is reduced inv diameter at its upper end below the tapered portion to permit the complete contraction of the die sections.

The position which the operative parts of the machine assume at the beginning of a to bring the punched hole into alinement with the setting devices. During these movements of the feeding lever the plunger 4 is elevated and the upsetting diel 22 together with the die expanding memberenter the barrel of the lowermost eyelet in the raceway 24. The die expanding member constituting a guard for the upsetting die prevents direct engagementvof the eyelet and the die. In case the eyelet is wrongly positioned in the raceway the conical head 70 of the die expanding member will deflect the eyelet out of the path of the upsetting die torted or clogged up the die expanding member .is able'to clear a passage for the upsetting die and, being resiliently supported on the spring 407 will give slightly before expanding the die sections and assist in preventing breakage of the die. After the upsetting die has entered the barrel of the eyelet the raceway is retracted and the upset,

ting die enters the previously punched hole of the work by reason of the continued upward movement of the -plunger 4. During this movement of the upsetting die the feed- .ing lever 14 is slowly retracted from the Work and the die expanding member following the movement of the feeding pim 52 with somewhat greater speed forces t e feeding pin52 gradually into vthe member 50 thereby compressing the spring 55. VThe tension of the spring 55 is less than the tension of the spring-40 in order to prevent under all circumstances expansion of the upsetting die before the latter has passed through the hole. of lining partv 90 o the4 work. After the spring 55 is fully compressed the feeding lever is again lowered and the cupped end of the feeding pin 52 forces the die expanding member `into the upsetting die thereby separatin its sections. When the upsetting die is ful y expanded the upsetting flange of the die sections is inengagement with the annular shoulder 72. 'Ihe cylindrical portion 74 gives lateral support to the expanded die sections. During the upsetting operation the upsetting die remains stationary and the barrel. of the eyelet is upset by the .movement of the eyelet carrying set 16 relatively to the die. Ihe position occupied by the parts at the conclusion of the upsetting operation is illustrated in Fig. 8.y The parts are then returned to the position of Fig. 3 ready to repeat the cycle.

Having thus described my invention, what v tracted condition by the resilience ofthe sections, and a die expanding member carried gy the upsetting die and movable within the 1e.

3. In an eyeleting machine an expansible upsetting die comprising a plurality of` resilient sections constructed and arranged to y be maintainednormally in contracted condition, a member having a die expanding portion 'carried by the upsetting die, and means to hold the die expanding portion of the said member out of the interlor of the upsetting die.

4. In an eyeleting machine an expansible upsetting die comprising a plurality of resilient sections constructed and arranged to be maintained normally in contracted condition, a die expanding member carried by the upsetting die and extending through. the body of the die, and yielding means to hold the die expanding member in a predetermined inoperative position.

5. lIn an eyeleting machine an expansible u setting die, comprising a plurality/ofres1 ient sections constructed and arranged to be maintained normally in contracted condition, a die expanding member carried by the die and movablewithin the latter, and ymeans to force the die expanding portion of said member into the contracted portion of said die.

6. In an eyeleting machine an expansible upsetting die comprising a plurality of movable sectlons constructed and arranged to be maintained normally in contracted condition, avdie expanding member carried by the die, means to force the die expanding member into the contracted die, and means to move the die ex anding member out of the ex anded upsettlng die.

In an eyeleting machine an expansible upsetting die, a die expanding member carried by the die, yielding means to hold the expanding member in inoperative position, and means for moving the expanding member positively to expand the die.

8. In an eyeleting machine, an expansibley die having an upsetting flange and a die expanding member carried by the die comprising a stem extending throughoutthe die, and a head extending normally beyond the upsetting ange of the die.

9. In an eyeleting machine an expansible upsetting die comprising a` plurality of resilient sections constructed and arranged to be maintained normally in contracted condition, Aand a die expanding memberconstituting a guard for the expansible die during the passage vof the latter through the barrel of the eyelet.

10. In an eyeleting machine, an expansible upsetting die, comprising a plurality of resilient sections forming an upsetting iiange maintained normally incontracted' conditiomand die expanding means carried by the die arranged to pass through the barrel of the eyelet to be set in advance of the upsetting flange of the die to prevent encounter of the upsetting end of the die with the eyelet prior to the expansion of the die.

11. In an eyeleting machine, an expansible upsetting die comprising a plurality of movable sections, a raceway presenting an eyelet to the upsetting die, and a die expanding member carried by the die and held normally above the upsetting iange of the die.

12. In an eyeleting machine, an expansible upsetting die, a die expanding member comprising a stem extending through the die and a head projecting normally beyond the upsetting flange of the die, means to force said member into the die, and means to return the expanding member to inoperative position at the conclusion of the upsetting operation.

13. In an eyeleting machine, an expansible upsetting die, anda die expanding member comprising a stem extending through the upsetting die and an expanding portion adjacent to the upsetting iiange of the die constructed and arranged to pass through the barrel df an eyelet to be set in advance of the n l guard for protecting the ends of the sec-v tions during the movement of the die.

16. In an eyeleting machine an expansible upsetting die comprising a plurality of resilient sections .constructed and arranged to be maintained normally in contracted condition, and a die expanding member carried by the die having a head arranged to enter the eyelet to be set in advance-of the die, the diameter of said head being greater than the diameter of the contracted die to clear a I passage for eyelet. t

17. In an eyeleting machine an expansible upsetting die comprising a plurality of resilient sections constructed arranged to be maintained normally in contracted condition and a die expanding member carried by the dieJ said expanding member consisting of a stem extending through the upsetting die, and a head stem.

18. In an eyeleting machine anexpansible upsetting die comprising a plurality of resilient sections, and adie expanding member carried by the die constructed to support `laterally 'for a distance corresponding substantially to the length of the unclenched barrel of the eyelet the sections of the expanded die.

19. In an eyeleting machine, an expansible upsetting die comprising a plurality of resilient sections, and a die expanding member carried by the die consisting of a stem and a head, the loWer portion of said head 'v being tapered to facilitate entrance of the head into the die to expand the die, and a cylindrical portion above the conical end of the head supporting laterally the sections of the expansible die during the upsetting operation.

20. In an eyeleting machine an expansible upsetting die, comprising a plurality of movable sections, and a die expanding mem- 4 ber carried by the die, said die expanding l member comprising a head having an annular shoulder engaging the upsetting flange of the die and rigidly supporting the latter durin the upsetting operation.

21. n an eyeleting machine an expansible die having an upsettin flange comprising a plurality of movaba sections and a die expanding member carried by the die,

the die throigh the barrel of the tapering toward said exp andin said die expanding member being constructed and arranged to engage the upsetting flange of the die and rigidly support the flange during the upsetting operation.

22. In an eyeleting machine an expansible upsetting die, a dieexpanding member carvmember into the die.

24. In an eyeleting machine, an expansible upsetting die, and a die expanding member carriedby the die, comprising a head normally above the upsetting ange of the die and a stem extending through the die, and means to limit the movement of the die expanding member toward inoperative position.

25. In an eyeleting machine an expansible upsetting die and a die expanding member carried by the upsettingdie, the said member comprising a head and a stem, t e lower end of which is spring tempered, and a lateral projection on the lower end of the said stem to limit movement of the die expanding member with relation to the die.

26. In an eyeleting machine an upsetting die comprising expansible sections, and'a die expanding member passing through said die and provided with` a resilient portion adapted to engage the die and prevent uninf tentional withdrawal of the member from the die.

27. In an eyeleting machine an upsetting die comprising expansible sections and a guard carried by the die for protecting the ends of the die sections during the movement of the die.

28. In an eyeleting machine an upsetting die comprising expansible sections and a combined guard and die expanding member constructed and arranged to support the expanded sections of the die.

29. In an eyeleting machine an expansible upsetting die comprising a plurality of sections maintained normally in contracted condition, a die expanding member carried by the die, operating means for the expanding member arranged to force said member into the die, means for urging the operating means yieldingly toward the expanding member and yielding means of greater resistance than the last mentioned means to hold the expanding member out of the die for the purpose of preventing premature expansion of the die.

30. In an eyeleting machine an expansible upsetting die, a die expanding member, f;

a spring holding the expandingmember normally out of the die, and operating means for the expanding member urged toward the expanding member by a spring of less tension than` the spring which tends to move the expanding member out of the die.

31. In an eyeleting machine, an expansi- `ble upsetting die comprising a plurality of resilient sections constructed and arranged to be maintained normally in contracted condition, a die expanding member carried by the upsetting die and extending through the body of the die, yielding means to move said member to die expanding position, and other yielding means to move the die expanding member to a position allowing the contraction of the die.

3,2..In an eyeleting machine, an expansible die having an upsetting flange and a die expanding member carried by the die comprising a stem extending throughout the die, and a head overhanging the flange of the expansible die when ,the die is in contracted relation.

33. In an eyeleting machine, an upsetting die provided with expansible sections, and a guard with a rounded end associated with the exposed end of the die, said end of the guard, being shaped to facilitate insertion of the guard and die through the hole.

34. In an eyeleting machine, an expansible upsetting die, a die expanding member carried by the die, and camoperated means constructed and arranged to force the die expanding member intoA position to expand the upsetting die.

35. In an eyeleting machine, an expansible upsetting die, a die expanding member carried by the die and arranged to be presented With the die upon one side of the work, and a member positioned for presentation on the opposite side of the work constructed and arranged to force the die expanding member into. position to expand the upsetting die.

36. In an eyeleting machine, an expansible upsetting die comprising a plurality of sections maintained normally in contracted condition, a die expanding member carried by the die, yielding means constructed and arranged to move the die expanding member to expanding position, and other yieldingv means of different strength from that of the last mentioned means constructed and arranged to move the die expandin member to an inoperative position to al ow the contraction of the die.

In testimony whereof I have signed my name to this specification.

nALrrI FRANK KNIGHT. 

